It's not a stunning deal but I thought it was okay because this borrower has a good track-record and I've done one deal with him in the past.

At the end of the day I know speaking with a local CPA may do me some good but figured I try asking here on BP first. 

Now if you have an extremely unique house like a concrete dome house and there are none in a 50 mile radius then maybe the cost approach can be used.

I found there are so many PM available but reading their words in webs do not do me any good.

I was stunned to find out her name is nowhere on the house.

I can not get a loan and can not borrow from family I have the experience in construction and housing just short of electrical, though I need some experience in the estimation department everything else is a no brainer do me.

Stunning Pergo laminate floors!

He says that if it get's 15 degrees or below the heater won't do me justice because of that.

The plan for the property is to live in it but also have a couple small airbnb structures (yurt or domes) in the wooded area as we are looking at multiple acre properties. 

Yes, you don't own the street and anyone can park anywhere, but it only takes 30 seconds to say to a tenant "Hey, do me a favor, if you can avoid it don't park your trailer in front of the neighbor's house - they're picky and it annoys them".